The same ejsBasic.jar is used for all the ejs created applets. So you only need to have one copy of ejsBasic.jar on your server. I think this is better than you have many copy of similar files. For examples, we have several hundreds ejs  applets and they all used the same ejsBasic.jar 
And if I update ejsBasic.jar to a new version, all the applets do not need to be re-compiled and all the applets will have new functions available.